All standard position receivers sending
NMEA 0183 data can be used to deliver information to the
system. Most modern receivers utilize
Glosnass. Old ground station based Loran C is also possible,
but it is less accurate. Most modern (GPS) receivers are provided with
SBAS or GBAS which makes them more
accurate and reliable.
Any standard NMEA 0183 GPS receiver can be
used (quality differs among models).
High accuracy and small delays can be achieved all over the world
using StarFire corrected GPS receivers. Accuracy can be 4.5 cm and
update rate 25/s. This technology was developed by
Attitude and Magnetic Direction Sensors
Attitude sensors that send their information using NMEA0183 are directly
usable. Also, sensors that send their data in ASCII format CR-LF separated
are easy to connect. Sensors that use some special binary format might need
some additional software or protocol changers. Here are some examples of
attitude sensors that can be directly connected:
Some USB-connectors are sensitive to vibrations, and may break during operation.
Sometimes changing the USB cable may cure this problem. Using older type screw
secured serial connectors (RS-232C option) also fixes this problem. Bluetooth
is also an option (no connectors at all).
If the application needs longer connector for the USB port, an additional active
USB cable might be needed.